CVE-2021-31961
MEDIUMWindows 10 and Windows Server 2016/2019 - Elevation of Privilege via InstallService
Title source: llmDescription
Windows InstallService Elevation of Privilege Vulnerability
References (2)
Core 2
Core References
Patch, Vendor Advisory x_refsource_misc
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31961
Third Party Advisory, VDB Entry x_refsource_misc
https://www.zerodayinitiative.com/advisories/ZDI-21-818/
Scores
CVSS v3
6.1
EPSS
0.0074
EPSS Percentile
50.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Details
CWE
CWE-269
Status
published
Products (8)
microsoft/windows_10
20h2
microsoft/windows_10
21h1
microsoft/windows_10
1809
microsoft/windows_10
1909
microsoft/windows_10
2004
microsoft/windows_server_2016
20h2
microsoft/windows_server_2016
2004
microsoft/windows_server_2019
Published
Jul 14, 2021
Tracked Since
Feb 18, 2026